Measurement of $W\gamma$ and $Z\gamma$ production at the LHC

We present measurements of high energy photons produced in association with W and Z bosons in $pp$ collisions at $\sqrt{s}$ = 7 TeV using the ATLAS detector. The analysis uses W and Z bosons selected with leptonic $e/\mu$ decays. Subsets of these events are identified by demanding an electromagnetic object passing isolated photon selection criteria. Using 35 pb$^{-1}$ of data we isolate signals of $p+p$ $\to l$ + $\nu$ + $\gamma$ + X and $p+p$ $\to l+l$ + $\gamma$ + X production with photon transverse energy $E_T$ $>$ 15 GeV and separation from the lepton $\Delta$R($l$-$\gamma$) $>$ 0.7. The production cross sections and the kinematic distributions of the leptons and photons are compared to Standard Model predictions.